WordWeb Online

1. (military) the aggregation of a country's military aircraft
   - air power
    
2. The operation of aircraft to provide transportation
    
3. The art of operating aircraft
   - airmanship
    
4. Travel via aircraft
   "aviation involves too much waiting in airports";
   - air travel, air

Derived forms: aviations

Type of: accumulation, aggregation, art, artistry, assemblage, collection, industry, prowess, travel, traveling [US], travelling [Brit, Cdn]

Encyclopedia: Aviation, Space, and Environmental Medicine